Steel wire rope end self-locking device

Abstract

The invention discloses a steel wire rope end self-locking device, which belongs to the technical field of steel wire rope joints, and comprises a sliding guide embedding block, a fastening screw, a petal-shaped conical expansion sleeve and a conical fixing seat, one end of a steel wire rope is fixedly connected with the sliding guide embedding block, and the other end of the steel wire rope penetrates through the petal-shaped conical expansion sleeve and the conical fixing seat; the sliding guide embedding block is used for fixing the end part of a steel wire rope through the plurality of fastening screws and is connected with the conical fixing seat; and the petal-shaped conical expansion sleeve is inserted into the conical fixing seat after the steel wire rope is stressed. The long end of the steel wire rope sequentially penetrates through the petal-shaped conical expansion sleeve and the conical fixing base, under the condition that the long end of the steel wire rope is pulled, the petal-shaped conical expansion sleeve is pressed into the conical fixing base through the sliding guide embedding block, and the outer side of the petal-shaped conical expansion sleeve is squeezed and then contracts inwards to lock the steel wire rope. The effect that the steel wire rope is tensioned more and more tightly under the external force stretching condition is achieved. The steel wire rope has the advantages that the end of the steel wire rope is pulled tighter and tighter when being stretched by external force, and the work is stable.

Description

Technical Field

[0001] The invention belongs to the technical field of wire rope joints, and more specifically relates to a wire rope end self-locking device. Background Art

[0002] Existing wire rope end locking devices usually use wire rope locks or clamp screws to tighten the wire rope. First, the installation takes up a large space, and the excess wire rope takes up a lot of space; second, the contact surface is small when locking the wire rope, and the large clamping force causes great damage to the wire; third, the usual locking method causes great impact and wear when passing through the wire rope support roller; fourth, while occupying the same space, the tension that can be loaded is small, and there is a risk of the wire rope coming out. Therefore, how to provide a wire rope end self-locking device with a small structure, large load tension and the ability to avoid damage is an urgent problem that technicians in this field need to solve. Summary of the invention

[0003] In view of this, the present invention provides a wire rope end self-locking device that can be installed in a limited space on a carrier, which can solve the problems in the prior art of small load tension, potential safety hazards, small installation space and easy damage to the wire rope.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A self-locking device for the end of a wire rope comprises a sliding guide clamping block, a set screw, a petal-shaped conical expansion sleeve and a conical fixing seat; one end of the wire rope is fixedly connected to the sliding guide clamping block, and the other end passes through the petal-shaped conical expansion sleeve and the conical fixing seat; the sliding guide clamping block fixes the end of the wire rope through a plurality of the set screws and is connected to the conical fixing seat; the petal-shaped conical expansion sleeve is inserted into the conical fixing seat after the wire rope is subjected to force.

[0006] Furthermore, the petal-shaped conical expansion sleeve includes an annular expansion sleeve and multiple contraction petals, and the outer side surfaces of the annular expansion sleeve and the multiple contraction petals are connected to form an outer cone; one end of the contraction petal is fixedly connected to the annular expansion sleeve, and a contraction notch is provided between two adjacent contraction petals.

[0007] Furthermore, the conical fixing seat includes a fixing seat and a wing plate; the wing plate is vertically fixedly connected to the fixing seat; a conical inner sleeve and a guide hole are arranged in parallel inside the wing plate, and the arrangement direction of the conical inner sleeve and the guide hole is parallel to the force direction of the wire rope.

[0008] Furthermore, the generatrix bevel angle of the inner cone surface of a conical section of the conical inner sleeve is the same as the generatrix bevel angle of the outer cone surface of the petal-shaped conical expansion sleeve; the petal-shaped conical expansion sleeve is provided with one end of the contraction petal inserted into the conical inner sleeve for contracting and tightening the wire rope.

[0009] Furthermore, the guide hole is provided at one end where the wing plate is connected to the fixing seat, and is used for connecting the sliding guide locking block.

[0010] Furthermore, the sliding guide clamping block includes a clamping seat, a clamping cone sleeve and a clamping guide rod; the clamping seat is symmetrically provided with a first wire rope through hole and a second wire rope through hole at the center position for setting the wire rope; the clamping cone sleeve is fixedly connected to one side of the clamping seat, one end of the clamping guide rod is fixedly connected to the same side of the clamping seat where the clamping cone sleeve is set, close to the second wire rope through hole, and the other end passes through the conical fixed seat.

[0011] Furthermore, one end of the embedding cone sleeve with a larger diameter is fixedly connected to the embedding seat; the axis of the embedding cone sleeve is colinear with the axis of the first wire rope through hole; and the diameter of the center hole of the embedding cone sleeve is the same as the diameter of the first wire rope through hole.

[0012] Furthermore, a group of tightening screw holes are provided on both side walls of the tightening seat, which are respectively connected to the first wire rope through hole and the second wire rope through hole; a group of tightening screw holes are also provided at the corresponding positions of the first wire rope through hole on the upper wall of the tightening seat, which are connected to the first wire rope through hole and are used to set the tightening screws to fix the wire rope.

[0013] The beneficial effects of the present invention are:

[0014] Compared with the prior art, the present invention slides the guide clamping block's clamping cone sleeve under the influence of external tension on the wire rope to press the petal-shaped conical expansion sleeve into the conical inner sleeve of the conical fixing seat. The petals of the petal-shaped conical expansion sleeve are deformed under the pressure of the conical inner sleeve of the conical fixing seat to lock the wire rope, which greatly increases the friction contact area and pressure of the wire rope, thereby allowing the wire rope end self-locking device to be pulled tighter and tighter during operation. The locking method of the wire rope end self-locking device of the present invention allows the wire rope to be uniformly compressed and locked along the entire length of the petal-shaped conical expansion sleeve, without causing extrusion damage to the wire rope, thereby improving the reliability of the wire rope end locking. After the wire rope end is locked, the rear end is located between the clamping cone sleeve and the clamping guide rod, which can prevent the redundant end from occupying other space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the structure of the sliding guide locking block of the present invention.

[0018] Figure 3 for Figure 2 Cross-sectional view of the sliding guide clamping block in FIG.

[0019] Figure 4 It is a structural schematic diagram of the petal-shaped conical expansion sleeve of the present invention.

[0020] Figure 5 It is a cross-sectional view of the tapered inner sleeve of the present invention.

[0021] Figure 6 A schematic structural diagram of a fixing base of the present invention.

[0022] Among them, in the figure:

[0023] 1-wire rope; 2-sliding guide clamping block; 21-clamping seat; 22-clamping cone sleeve; 23-clamping guide rod; 3-setting screw; 4-petal-shaped cone expansion sleeve; 41-contracting petal; 5-conical fixing seat; 51-fixing seat; 52-conical inner sleeve; 53-guide hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Please see attached Figure 1-6 The present invention provides a wire rope end self-locking device, comprising a sliding guide clamping block 2, a set screw 3, a petal-shaped conical expansion sleeve 4 and a conical fixing seat 5. One end of the wire rope 1 is connected to the sliding guide clamping block 2, and the other end passes through the petal-shaped conical expansion sleeve 4 and the conical fixing seat 5 in sequence.

[0026] The petal-shaped conical expansion sleeve 4 is sleeved on the steel wire rope 1, and comprises an annular expansion sleeve and a plurality of contraction petals 41, wherein the outer side surfaces of the annular expansion sleeve and the plurality of contraction petals 41 are connected to form an outer cone; one end of the contraction petal 41 is fixedly connected to the annular expansion sleeve, and a contraction slot is provided between two adjacent contraction petals 41, and the other end of the contraction petal 41 faces the force direction of the steel wire rope 1, and contracts toward the center of the axis to make the whole into a cone, so that the contraction petal 41 can tighten the steel wire rope 1 when the petal-shaped conical expansion sleeve 4 is subjected to force.

[0027] The petal-shaped conical expansion sleeve 4 is inserted into the conical fixing seat 5 after the steel wire rope 1 is subjected to force. The conical fixing seat 5 comprises a fixing seat 51 and a wing plate; the wing plate is vertically fixedly connected to the fixing seat 51; a conical inner sleeve 52 and a guide hole 53 are arranged in parallel inside the wing plate, and the arrangement direction of the conical inner sleeve 52 and the guide hole 53 is parallel to the force direction of the steel wire rope 1.

[0028] The wing plate is connected to the steel wire rope 1 provided with the petal-shaped conical expansion sleeve 4 through the conical inner sleeve 52; the conical inner sleeve 52 is provided with two sections, one section is conical and the other section is cylindrical, and the small diameter end of the conical section of the conical inner sleeve 52 is connected to the cylindrical section of the conical inner sleeve 52. The generatrix bevel of the inner cone surface of the conical section of the conical inner sleeve 52 is the same as the generatrix bevel of the outer cone surface of the petal-shaped conical expansion sleeve 4, so that the end of the petal-shaped conical expansion sleeve 4 provided with the contraction petal 41 is inserted into the conical section of the conical inner sleeve 52, and the conical inner sleeve 52 with a gradually reduced diameter makes each contraction petal 41 contract synchronously toward the center of the shaft to tighten the steel wire rope 1. The guide hole 53 is provided at the end where the wing plate is connected to the fixed seat 51, and is used to connect the sliding guide clamping block 2.

[0029] The fixing seat 51 is provided with a plurality of bolt holes, and can be fixed to the carrier by bolts or the fixing seats 51 in two sets of self-locking devices can be connected and integrated, so as to realize the connection between the end of the wire rope and the carrier, and to connect the ends of the two wire ropes 1 to each other, and is used for the infinite rope transmission formed by the self-locking of the two ends of the wire rope.

[0030] The sliding guide clamping block 2 fixes the end of the wire rope 1 through multiple set screws 3 and is connected to the conical fixing seat 5; the sliding guide clamping block 2 includes a clamping seat 21, a clamping cone sleeve 22 and a clamping guide rod 23; the clamping seat 21 is a rectangular structure, and a transition chamfer is provided on the end face; the first wire rope through hole and the second wire rope through hole are symmetrically provided at the center position of the clamping seat 21 for setting the wire rope 1. The embedding cone sleeve 22 is fixedly connected to one side of the embedding seat 21, and the large diameter end of the embedding cone sleeve 22 is fixedly connected to the embedding seat 21; the axis of the embedding cone sleeve 22 is colinear with the axis of the first wire rope through hole; the diameter of the center hole of the embedding cone sleeve 22 is the same as the diameter of the first wire rope through hole; a group of tightening screw holes are provided on both side walls of the embedding seat 21, which are respectively connected to the first wire rope through hole and the second wire rope through hole, and are used to set the tightening screws 3; a group of tightening screw holes are also provided at the corresponding position of the first wire rope through hole on the upper wall of the embedding seat 21, which are connected to the first wire rope through hole; each group includes three tightening screw holes, and the tightening screws 3 are provided to fix the wire rope 1.

[0031] One end of the locking guide rod 23 is fixedly connected to the same side of the locking seat 21 where the locking cone sleeve 22 is provided, close to the second wire rope through hole, and the other end passes through the wing plate and can slide in the guide hole 53. The short end of the wire rope 1 passes through the locking cone sleeve 22, the first wire rope through hole, and reversely passes through the second wire rope through hole. The locking screw 3 is provided in the locking screw hole. After tightening the locking screw 3, the wire rope 1 can be fixed in the locking seat 21.

[0032] The working process of the present invention is as follows: the short end of the wire rope 1 passes through the first wire rope through hole of the sliding guide clamping block 2 and reversely passes through the second wire rope through hole and is pre-tightened with a set screw 3, and then the long end of the wire rope 1 passes through the petal-shaped conical expansion sleeve 4 and the conical fixing seat 5 in sequence. When the long end of the wire rope 1 is subjected to tension, the clamping cone sleeve 22 of the sliding guide clamping block 2 abuts against the annular expansion sleeve of the petal-shaped conical expansion sleeve 4, and the petal-shaped conical expansion sleeve 4 is pressed into the conical fixing seat 5. The outer conical surface of the petal-shaped conical expansion sleeve 4 cooperates with the inner conical surface of the conical inner sleeve 52, so that the contraction petal 41 is squeezed and uniformly and synchronously contracted inward to lock the wire rope 1, thereby achieving the effect that the end of the wire rope 1 is pulled tighter and tighter under external force. The locking guide rod 23 of the sliding guide locking block 2 is forced to move along the guide hole 53, so that the sliding guide locking block 2 can accurately abut against the petal-shaped conical expansion sleeve 4 when moving, and can also prevent the sliding guide locking block 2 from rotating when subjected to force. Finally, the sliding guide locking block 2 and the petal-shaped conical expansion sleeve 4 and the conical fixing seat 5 are embedded into a whole. The fixing seat 51 can be fixed to the carrier by bolts or the fixing seats 51 in the two sets of self-locking devices are connected and integrated, which can not only realize the connection between the wire rope end and the carrier, but also connect the ends of the two wire ropes 1 to each other, and is used for the infinite rope transmission formed by the self-locking of the two ends of the wire rope.

[0033] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0034] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wire rope end self-locking device, characterized in that: It comprises a sliding guide clamping block (2), a set screw (3), a petal-shaped conical expansion sleeve (4) and a conical fixing seat (5); one end of the steel wire rope (1) is fixedly connected to the sliding guide clamping block (2), and the other end passes through the petal-shaped conical expansion sleeve (4) and the conical fixing seat (5); the sliding guide clamping block (2) fixes the end of the steel wire rope (1) through a plurality of the set screws (3) and is connected to the conical fixing seat (5); the petal-shaped conical expansion sleeve (4) is inserted into the conical fixing seat (5) after the steel wire rope (1) is subjected to force.

2. A wire rope end self-locking device according to claim 1, characterized in that: The petal-shaped conical expansion sleeve (4) comprises an annular expansion sleeve and a plurality of contraction petals (41), the outer side surfaces of the annular expansion sleeve and the plurality of contraction petals (41) being connected to form an outer conical surface; one end of the contraction petal (41) is fixedly connected to the annular expansion sleeve, and a contraction notch is provided between two adjacent contraction petals (41).

3. A wire rope end self-locking device according to claim 2, characterized in that: The conical fixing seat (5) comprises a fixing seat (51) and a wing plate; the wing plate is vertically fixedly connected to the fixing seat (51); a conical inner sleeve (52) and a guide hole (53) are arranged in parallel inside the wing plate, and the arrangement direction of the conical inner sleeve (52) and the guide hole (53) is parallel to the force direction of the wire rope (1).

4. A wire rope end self-locking device according to claim 3, characterized in that: The generatrix bevel angle of the inner cone surface of a conical section of the conical inner sleeve (52) is the same as the generatrix bevel angle of the outer cone surface of the petal-shaped conical expansion sleeve (4); the petal-shaped conical expansion sleeve (4) is provided with one end of the contraction petal (41) inserted into the conical inner sleeve (52) for contraction and tightening the steel wire rope (1).

5. A wire rope end self-locking device according to claim 3, characterized in that: The guide hole (53) is arranged at one end of the wing plate connected to the fixing seat (51) and is used for connecting the sliding guide locking block (2).

6. A wire rope end self-locking device according to claim 1, characterized in that: The sliding guide clamping block (2) comprises a clamping seat (21), a clamping cone sleeve (22) and a clamping guide rod (23); the clamping seat (21) is symmetrically provided with a first wire rope through hole and a second wire rope through hole at the center position for setting the wire rope (1); the clamping cone sleeve (22) is fixedly connected to one side of the clamping seat (21), and one end of the clamping guide rod (23) is fixedly connected to the same side of the clamping seat (21) where the clamping cone sleeve (22) is set, close to the second wire rope through hole, and the other end passes through the conical fixing seat (5).

7. A wire rope end self-locking device according to claim 6, characterized in that: The large diameter end of the embedding cone sleeve (22) is fixedly connected to the embedding seat (21); the axis of the embedding cone sleeve (22) is colinear with the axis of the first wire rope through hole; the diameter of the center hole of the embedding cone sleeve (22) is the same as the diameter of the first wire rope through hole.

8. A wire rope end self-locking device according to claim 6, characterized in that: A group of tightening screw holes are provided on both side walls of the locking seat (21), respectively connected to the first steel wire rope through hole and the second steel wire rope through hole; a group of tightening screw holes are also provided at positions corresponding to the first steel wire rope through hole on the upper wall of the locking seat (21), connected to the first steel wire rope through hole, and used for setting the tightening screws (3) to fix the steel wire rope (1).

Images